51293904 has 40 divisors (see below), whose sum is σ = 134009280. Its totient is φ = 16904448.

The previous prime is 51293899. The next prime is 51293909. The reversal of 51293904 is 40939215.

51293904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51293899) and next prime (51293909).

It is a super-2 number, since 2×51293904² = 5262129175122432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51293909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732 + ... + 10275.

It is an arithmetic number, because the mean of its divisors is an integer number (3350232).

Almost surely, 2^51293904 is an apocalyptic number.

It is an amenable number.

51293904 is an abundant number, since it is smaller than the sum of its proper divisors (82715376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51293904 is a wasteful number, since it uses less digits than its factorization.

51293904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12107 (or 12101 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 51293904 is about 7161.9762635742. The cubic root of 51293904 is about 371.5539804192.

The spelling of 51293904 in words is "fifty-one million, two hundred ninety-three thousand, nine hundred four".